Buying a new home is one of the most exciting transitions in life—but it can also come with financial questions, especially if you already have an existing mortgage. Many Canadians don’t realize they may have the option to take their current mortgage with them when moving to a new property. This is called mortgage portability, and understanding how it works can save you thousands of dollars in penalties and interest costs.

In this blog, we’ll break down what mortgage portability is, when it makes sense, what conditions apply, and how to decide if it’s the right choice for your situation.

📌 What Is Mortgage Portability?

Mortgage portability allows you to transfer your existing mortgage, including your interest rate, remaining term, and sometimes even your lender benefits, to a new property.

It’s like picking up your current mortgage and moving it from Home A to Home B.

This can be extremely valuable if:

• You have a great interest rate you don’t want to lose
  
  
• You’d face big prepayment penalties by breaking your mortgage
  
  
• You want to avoid the hassle of reapplying for a brand-new mortgage
  
  

Most major lenders in Canada (banks and credit unions) offer mortgage portability, but the eligibility rules can vary.

📌 Benefits of Mortgage Portability

Here are the top ways portability can help homeowners:

1. You Keep Your Current Interest Rate

If interest rates today are higher than when you secured your mortgage, portability gives you the advantage of locking in your old rate.

Example:

• Your current rate: 2.24% fixed
  
  
• Today’s market rate: 5.09% fixed
  
  

If you port your mortgage, you continue paying 2.24%—potentially saving thousands over the remaining term.

2. You Avoid Breaking Your Mortgage (and Paying Penalties)

Breaking a mortgage early often comes with large penalties, especially if you’re in a fixed-rate term. These penalties can be:

• Interest Rate Differential (IRD) — often very expensive
  
  
• Three months’ interest — typical for variable mortgages
  
  

Porting your mortgage may allow you to move without triggering these costs.

3. It Makes Moving More Affordable

Buying a new home already involves closing costs, moving expenses, inspections, and legal fees. Mortgage portability helps reduce financial stress by letting you keep an existing mortgage instead of starting from scratch.

📌 When You Should Consider Portability

Porting your mortgage is beneficial in many cases, but it’s not always the right move.

Here are situations where portability makes the most sense:

✔️ If Interest Rates Are Higher Today

This is the most common reason Canadians choose to port.

When rates go up, your existing mortgage becomes an asset you don’t want to give up.

✔️ If You’re Mid-Term in a Fixed Mortgage

Breaking a fixed mortgage often results in hefty IRD penalties. Portability can help you avoid them entirely.

✔️ If You’re Buying and Selling Within a Short Period

Many lenders require:

• Your purchase of the new property
  
  
• And the sale of the old property
  
  

to happen within 30–90 days for the portability to be approved.

✔️ If Your Financial Situation Has Changed

Maybe you switched jobs, took maternity leave, became self-employed, or your income temporarily dropped.

Your current mortgage has already been approved.
A new one might be harder to qualify for.

Portability can help you keep your mortgage without going through a tougher qualification process.

📌 When Porting May NOT Be the Best Option

Even though portability can be helpful, there are scenarios where it may not fit your needs.

❌ If Interest Rates Are Lower Now

If today’s rates are significantly lower, it may be smarter to break your mortgage (even with penalties) and lock in a better rate for the long term.

❌ If You Need to Increase Your Loan Amount

If the new home is more expensive, you may need a blend-and-extend mortgage:

• Keep part of your old mortgage at the original rate
  
  
• Add the new increased amount at today’s rate
  
  

This creates a blended interest rate.

Depending on the lender, the blended rate may or may not be favourable compared to starting fresh.

❌ If Your Lender Does Not Offer Portability

Not all lenders offer true portability, especially:

• Private lenders
  
  
• Alternative B-lenders
  
  
• Some credit unions
  
  

Always confirm portability options before making decisions.

❌ If Your Mortgage Has Too Many Restrictions

Some mortgages (especially low-rate promos) have strict rules like:

• Limited portability windows
  
  
• Porting fees
  
  
• Restrictive timelines
  
  
• New property must meet certain standards
  
  

Always check the fine print.

📌 How the Mortgage Porting Process Works

Here is what the typical process looks like:

1. Confirm Portability With Your Lender

Contact your lender to confirm:

• Is your mortgage portable?
  
  
• What deadlines apply?
  
  
• Are there fees?
  
  
• Will you need to requalify?
  
  

2. Get Approved for the New Property

Even if you’re porting, lenders must still approve the new property’s value and condition.

3. Determine If You Need a “Blended Rate”

If your new home requires a larger mortgage, the lender will calculate:

• Your current rate
  
  
• Today’s market rate
  
  
• The new mortgage amount
  
  

This determines your blended rate.

4. Complete the Sale and Purchase

These must often happen within:

• 30 days, or
  
  
• 60–90 days, depending on the lender
  
  

Failing to meet timelines may invalidate your portability.

5. Pay Any Administrative Fees

Some lenders charge between $100–$300 for porting.
Still much cheaper than prepayment penalties.

📌 Should You Port Your Mortgage?

Mortgage portability is a powerful tool—but only when it’s the right fit.

You SHOULD consider porting if:
✔️ You have a great existing rate
✔️ Rates are higher today
✔️ You want to avoid penalties
✔️ You’re mid-term in a fixed mortgage
✔️ You want to save money when moving

You SHOULD NOT port if:
❌ Rates are lower today
❌ You’re moving far into the future
❌ Your mortgage has strict limits
❌ You want a completely new mortgage structure

📌 Final Thoughts

Mortgage portability can save Canadian homeowners thousands of dollars — but only if you understand the rules and timing. If you’re planning to move and want clarity on whether porting is the best option, getting a proper assessment can help you make the most cost-effective choice.